It took minimal time to wire up the the RMP to Cockpit Concept’s lowspeed ARINC 429 boards — only 2 wires were required. A software profile was already written to interface directly with Prepar3D.
I can report the genuine panel fully works with Vatsim/IVAO.
Unfortunately the success was short lived as I managed to accidentally short the 28 VDC supply destroying the Cockpit Concept ARINC 429 board in the process(!) and more boards will need to be ordered from Christoph and Cockpit Concept.
I was able to capture a short video of the RMP functioning with Vatsim before the malfunction: